With the right screwdriver allows the case to be opened with little effort. For this purpose on the side of the plug completely remove the two screws and with a little care, the side part carefully (evt. To a thin screwdriver into the screw holes insert). Installing the mSATA SSD works without problems.
Since the internal mSATA is rarely changed, for me no real gripe.
Overall, the housing looks relatively high and robust. The plug is fully inserted.
The above criticisms are to be expected in my view, with a "cheap product". Overall, it therefore fulfills actually exactly my expectations and so 5 points.
Addendum: delivery was made from China by "registered mail". Took a bit long and I had to pick up at the post office.